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The fascinating electronic properties of the family of layered organic molecular crystals kappa-(BEDT-TTF)2X where X is an anion (e.g., X=I3, Cu[N(CN)2]Br, Cu(SCN)2) are reviewed. These materials are particularly interesting because of…

Strongly Correlated Electrons · Physics 2007-05-23 Ross H. McKenzie

In this work, we investigate the melting of charmonium states within a holographic QCD model in the context of Einstein-Maxwell-Dilaton (EMD) theory. In the dual field theory, the model describes the heavy mesons inside a finite temperature…

High Energy Physics - Phenomenology · Physics 2022-07-13 Luis A. H. Mamani , Defu Hou , Nelson R. F. Braga

We investigate full QCD with (2+1)-flavour of HISQ fermions at the physical point in the presence of uniform Abelian chromomagnetic background fields. Our focus is on the renormalized light and strange chiral condensate around the…

High Energy Physics - Lattice · Physics 2024-07-11 Paolo Cea , Leonardo Cosmai

We use the quantum spectral curve to compute the Hagedorn temperature for ABJM theory in terms of the interpolating function $h(\lambda)$. At weak coupling we compute this temperature up to eight-loop order, showing that it matches the…

High Energy Physics - Theory · Physics 2023-07-14 Simon Ekhammar , Joseph A. Minahan , Charles Thull

Hadron properties are studied at hot medium using the quark sigma model. The quark sigma model is extended to include eighth-order of mesonic interactions based on some aspects of quantum chromodynamic (QCD) theory. The extended effective…

High Energy Physics - Phenomenology · Physics 2015-01-05 M. Abu-Shady , A. K. Abu-Nab

We update lattice QCD results for second order cumulants of conserved charge fluctuations and correlations at non-zero temperature and vanishing values of the conserved charge chemical potentials. We compare these results to hadron…

High Energy Physics - Lattice · Physics 2021-11-08 D. Bollweg , J. Goswami , O. Kaczmarek , F. Karsch , Swagato Mukherjee , P. Petreczky , C. Schmidt , P. Scior

We analyze the (1+1) dimensional QCD (QCD_2) at finite density to consider a number of qualitative issues: confinement in dense quark matter, the chiral symmetry breaking near the Fermi surface, the relation between chiral spirals and quark…

High Energy Physics - Phenomenology · Physics 2015-05-28 Toru Kojo

In the usual holographic approach to QCD, the meson spectrum is generated due to a non-trivial 5-dimensional background. We propose an alternative 5-dimensional scenario in which the spectrum emerges due to coupling to a scalar field whose…

High Energy Physics - Phenomenology · Physics 2014-11-20 S. S. Afonin

Gauge theories with fermions in adjoint and fundamental representations are relevant for many different applications including composite Higgs models and general aspects of the confinement problem. We present first results from simulations…

High Energy Physics - Lattice · Physics 2021-12-01 Georg Bergner , Stefano Piemonte

Massless $QCD_2$ is dominated by classical configurations in the large $N_f$ limit. We use this observation to study the theory by finding solutions to equations of motion, which are the non-Abelian generalization of the Schwinger equation.…

High Energy Physics - Theory · Physics 2016-09-06 A. Armoni , Y. Frishman , J. Sonnenschein , U. Trittmann

We show that the Hagedorn temperature obtained from experimental spectra is larger for mesons than for baryons. Dual string models explain this behavior asymptotically.

High Energy Physics - Phenomenology · Physics 2007-05-23 Wojciech Broniowski

We analyse the effects of the light and strange current quark masses on the phase diagram of QCD at finite temperature and vanishing baryonic chemical potential, computing the speed of sound, the trace anomaly of the energy momentum tensor…

High Energy Physics - Phenomenology · Physics 2018-10-17 J. Moreira , J. Morais , B. Hiller , A. A. Osipov , A. H. Blin

Recent interest in the study of color superconductivity has focused on the regime of high baryon density where perturbative QCD may be employed. Based on the dominant one-gluon-exchange interaction, both the transition temperature and zero…

High Energy Physics - Phenomenology · Physics 2009-10-31 William E. Brown , James T. Liu , Hai-cang Ren

We consider spatial correlation lengths \xi for various QCD light quark bilinears at temperatures above a few hundred MeV. Some of the correlation lengths (such as that related to baryon density) coincide with what has been measured earlier…

High Energy Physics - Phenomenology · Physics 2009-11-10 M. Laine , M. Vepsalainen

Holographic models in the T=0 universality class of QCD in the limit of large number N_c of colors and N_f massless fermion flavors, but constant ratio x_f=N_f/N_c, are analyzed at finite temperature. The models contain a 5-dimensional…

High Energy Physics - Phenomenology · Physics 2015-06-11 T. Alho , M. Jarvinen , K. Kajantie , E. Kiritsis , K. Tuominen

We study two-color QCD with two flavors of Wilson fermion as a function of quark chemical potential mu and temperature T, for two different lattice spacings and two different quark masses. We find that the quarkyonic region, where the…

High Energy Physics - Lattice · Physics 2020-04-15 Tamer Boz , Pietro Giudice , Simon Hands , Jon-Ivar Skullerud

As part of an ongoing effort to characterize the high temperature phase of QCD, in a numerical simulation using the staggered fermion scheme, we measure the quark baryon density in the vicinity of a fixed test quark at high temperature and…

High Energy Physics - Lattice · Physics 2008-11-26 Claude Bernard , Thomas A. DeGrand , Carleton DeTar , Steven Gottlieb , Alex Krasnitz , Robert L. Sugar , Douglas Toussaint

After introducing essential, qualitative concepts and results, we discuss the application of Dyson-Schwinger equations to QCD at finite T and mu. We summarise the calculation of the critical exponents of two-light-flavour QCD using the…

Nuclear Theory · Physics 2010-03-04 David Blaschke , Craig D. Roberts

We study 4-dimensional SU(N) gauge theory with one adjoint Weyl fermion and fundamental matter - either bosonic or fermionic. Symmetries, their 't Hooft anomalies, and the Vafa-Witten-Weingarten theorems strongly constrain the possible bulk…

High Energy Physics - Theory · Physics 2023-11-22 Mohamed M. Anber , Nakarin Lohitsiri , Tin Sulejmanpasic

We analyze experimental particle spectra and show that the Hagedorn temperature is significantly larger for mesons than for baryons. The effect can be explained within dual string models: excitations of three strings in the baryon produce…

High Energy Physics - Phenomenology · Physics 2007-05-23 Wojciech Broniowski